LOCATION.-- Lat 40°37'48", long 87°43'26" (NAD of 1927), in NW1/4NE1/4 sec.16, T.25 N., R.12 W., Iroquois County, Hydrologic Unit 07120002, on pier at downstream side of bridge on County Highway 9,200 ft downstream from Mud Creek, 1 mi west of Milford, and at mile 23.9. |
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DRAINAGE AREA.-- 446 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: July 1948 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91, and 1999 to 2004. |
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MISCELLANEOUS: Water years 2004 and 2005; Contaminants in streambed sediments, August 1999; contaminants in fish tissue, August 1999. |
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BIOLOGICAL |
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ALGAE: Water years 1999, 2002-04. |
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BENTHIC MACROINVERTEBRATES: Water years 1999, 2002-04. |
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FISH: Water years 1999, 2002-04. |
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HABITAT: Water years 1999-2000, 2002-04. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 622.00 ft above NGVD of 1929 (621.80 ft NAVD 1988). Prior to July 23, 1970, nonrecording gage at same site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 22,900 ft3/s, Feb. 21, 1951, gage height, 20.90 ft, from rating curve extended above 8,200 ft3/s; maximum gage height, 28.16 ft, Apr. 12, 1994, discharge, 19,400 ft3/s; minimum discharge, 2.0 ft3/s, Sept. 1, 2, 7, 1972, Oct. 8, 1994. |
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REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. |
Discharge, cubic feet per second, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 54 | 527 | 3010 | e170 | 210 | 374 | 202 | 171 | 86 | 59 | 42 | 8.8 |
2 | 53 | 1420 | 3450 | 171 | 203 | 320 | 189 | 159 | 85 | 47 | 34 | 8.6 |
3 | 50 | 2020 | 2340 | 453 | 194 | 289 | 189 | 150 | 90 | 37 | 28 | 8.0 |
4 | 49 | 1890 | 1540 | 2280 | 193 | 277 | 193 | 141 | 89 | 33 | 22 | 7.3 |
5 | 48 | 1930 | 1060 | 3460 | 229 | 272 | 186 | 133 | 87 | 41 | 21 | 7.3 |
6 | 46 | 1400 | 944 | 4960 | 433 | 251 | 176 | 128 | 162 | 45 | 18 | 7.2 |
7 | 44 | 932 | 2100 | 3640 | 694 | 254 | 168 | 129 | 134 | 40 | 17 | 7.2 |
8 | 44 | 658 | 4550 | 2040 | 1460 | 246 | 159 | 130 | 137 | 35 | 16 | 7.0 |
9 | 46 | 505 | 3410 | 1170 | 1680 | 219 | 149 | 126 | 191 | 30 | 16 | 7.0 |
10 | 45 | 429 | 2120 | 919 | 1220 | 208 | 143 | 126 | 137 | 23 | 12 | 6.8 |
11 | 43 | 380 | 1380 | 1400 | 808 | 210 | 139 | 125 | 109 | 20 | 13 | 6.6 |
12 | 42 | 328 | 950 | 4520 | 654 | 203 | 153 | 120 | 126 | 21 | 15 | 6.3 |
13 | 48 | 283 | 743 | 8130 | 741 | 184 | 599 | 116 | 123 | 27 | 16 | 6.1 |
14 | 50 | 247 | 571 | e10000 | 2730 | 169 | 726 | 116 | 117 | 30 | 18 | 7.7 |
15 | 49 | 228 | 476 | e5000 | 3410 | 159 | 507 | 114 | 193 | 31 | 18 | 13 |
16 | 47 | 221 | 431 | e3000 | 2290 | 152 | 372 | 109 | 145 | 29 | 17 | 16 |
17 | 45 | 213 | 389 | e1300 | 1660 | 151 | 306 | 104 | 111 | 40 | 15 | 14 |
18 | 68 | 203 | 358 | e750 | 1040 | 152 | 272 | 99 | 97 | 52 | 22 | 12 |
19 | 339 | 234 | 329 | e600 | 713 | 151 | 245 | 103 | 86 | 102 | 23 | 12 |
20 | 364 | 330 | 280 | e470 | 578 | 147 | 227 | 298 | 78 | 108 | 18 | 53 |
21 | 276 | 308 | e260 | e390 | 641 | 139 | 233 | 245 | 72 | 58 | 16 | 77 |
22 | 200 | 278 | e230 | e340 | 754 | 136 | 299 | 175 | 66 | 225 | 14 | 37 |
23 | 233 | 260 | e210 | e305 | 674 | 140 | 508 | 150 | 59 | 322 | 13 | 26 |
24 | 784 | 316 | e200 | e290 | 581 | 140 | 475 | 132 | 54 | 130 | 12 | 27 |
25 | 604 | 1510 | e175 | e280 | 516 | 146 | 371 | 118 | 52 | 69 | 12 | 159 |
26 | 419 | 1850 | e160 | e275 | 462 | 205 | 303 | 110 | 49 | 51 | 12 | 356 |
27 | 338 | 2230 | e155 | e270 | 410 | 237 | 257 | 106 | 47 | 130 | 12 | 402 |
28 | 365 | 3710 | e150 | 283 | 400 | 232 | 217 | 101 | 45 | 236 | 11 | 216 |
29 | 380 | 3360 | e150 | 303 | --- | 212 | 196 | 97 | 42 | 129 | 10 | 269 |
30 | 528 | 2400 | e155 | 261 | --- | 188 | 186 | 94 | 59 | 77 | 10 | 322 |
31 | 648 | --- | e160 | 232 | --- | 210 | --- | 90 | --- | 55 | 9.4 | --- |
TOTAL | 6349 | 30600 | 32436 | 57662 | 25578 | 6373 | 8345 | 4115 | 2928 | 2332 | 532.4 | 2112.9 |
MEAN | 205 | 1020 | 1046 | 1860 | 914 | 206 | 278 | 133 | 97.6 | 75.2 | 17.2 | 70.4 |
MAX | 784 | 3710 | 4550 | 10000 | 3410 | 374 | 726 | 298 | 193 | 322 | 42 | 402 |
MIN | 42 | 203 | 150 | 170 | 193 | 136 | 139 | 90 | 42 | 20 | 9.4 | 6.1 |
CFSM | 0.46 | 2.29 | 2.35 | 4.17 | 2.05 | 0.46 | 0.62 | 0.30 | 0.22 | 0.17 | 0.04 | 0.16 |
IN. | 0.53 | 2.55 | 2.71 | 4.81 | 2.13 | 0.53 | 0.70 | 0.34 | 0.24 | 0.19 | 0.04 | 0.18 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2005, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 142 | 239 | 371 | 417 | 545 | 639 | 681 | 569 | 514 | 326 | 122 | 112 |
MAX | 1813 | 1964 | 1361 | 2240 | 1918 | 1915 | 1908 | 1824 | 2057 | 1599 | 1030 | 1250 |
(WY) | 2002 | 1986 | 1991 | 1950 | 1951 | 1979 | 1994 | 1998 | 2004 | 1993 | 2004 | 1993 |
MIN | 4.55 | 7.69 | 5.57 | 4.06 | 12.0 | 64.5 | 110 | 56.6 | 27.2 | 10.8 | 6.13 | 4.27 |
(WY) | 1964 | 1964 | 1964 | 1977 | 1963 | 1981 | 1986 | 1988 | 1988 | 1988 | 1988 | 1988 |
SUMMARY STATISTICS | FOR 2004 CALENDAR YEAR | FOR 2005 WATER YEAR | WATER YEARS 1948 - 2005 | |||
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ANNUAL TOTAL | 254510 | 179363.3 | ||||
ANNUAL MEAN | 695 | 491 | 389 | |||
HIGHEST ANNUAL MEAN | 855 | 1993 | ||||
LOWEST ANNUAL MEAN | 87.2 | 1954 | ||||
HIGHEST DAILY MEAN | 9860 | Jun 13 | 10000 A | Jan 14 | 15200 | Apr 13 1994 |
LOWEST DAILY MEAN | 29 | Aug 17 | 6.1 | Sep 13 | 2.5 | Sep 1 1972 |
ANNUAL SEVEN-DAY MINIMUM | 34 | Aug 11 | 6.7 | Sep 7 | 2.9 | Sep 11 1988 |
MAXIMUM PEAK FLOW | 11300 | Jan 14 | 22900 B | Feb 21 1951 | ||
MAXIMUM PEAK STAGE | 22.66 | Jan 14 | 28.16 C | Apr 12 1994 | ||
INSTANTANEOUS LOW FLOW | 5.8 | Sep 13 | 2.0 | D | ||
ANNUAL RUNOFF (CFSM) | 1.56 | 1.10 | 0.872 | |||
ANNUAL RUNOFF (INCHES) | 21.23 | 14.96 | 11.84 | |||
10 PERCENT EXCEEDS | 1970 | 1390 | 1000 | |||
50 PERCENT EXCEEDS | 228 | 171 | 130 | |||
90 PERCENT EXCEEDS | 60 | 16 | 11 |
B - Gage height, 20.90 ft., from rating curve extended above 8,200 ft3/s. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |